Winter gas started about a month ago, this often causes hesitation. Hemi's are tuned to 89, so you really shouldnt run 87. My station only has 87 and 91, I run 91 my truck runs like a ***** ape on it, it hesitates on 87 very much.
Gas, air and spark. First run codes see if anything shows up. I wouldn't imagine spark issue, sounds like you will get new battery, I wouldn't expect anything else here with so few miles. Check air cleaner, perhaps change filter, look around for oil. Check and clean throttle body, easy dyi, you don't really need to take it off, but if you take it off your combustion chamber wont have to burn the crude, no big deal either way.
You can tell that piston top below pic is being cleaned in the right place, outside near and around the rings.
The best way to clean injectors is PEA detergent, redline si-1 and amsoil pi have the highest % of PEA, royal purple fuel additive honorable mention and the most popular is techron, I prefer redline, this is a ram forum members pic of cylinder top after running redline si-1. You can tell, it will likely need more then one, but you can also tell is cleans. The best time to run this is in the three tanks before an oil change, you don't really want to run this on fresh oil, this carbon doesnt just disappear, some of it ends up in oil and some gets burned out the exhaust.
This is combustion chamber yes, but PEA is the only thing that realy cleans injectors through the gas. Gas by itself is a solvent, so adding some random solvent which like 1/2 the cleaners do is only going to be so effective, you need a "detergent" and PEA is the known one for injectors.
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